Precision forging process with axially driven container
Precision forging process with axially driven container
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DOI：
10.1016/s0924-0136(97)00155-6
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发表时间：
1997-11
影响因子：
6.3
通讯作者：
K. Osakada;X. Wang;S. Hanami
中科院分区：
文献类型：
--
作者：
K. Osakada;X. Wang;S. Hanami
为了将精锻成形压力降低到可行的水平，提出了一种采用轴向驱动容器的方法。在该方法中，采用可移动容器，该可移动容器由致动器轴向驱动，同时坯料由冲头挤压。坯料材料很容易流入模腔的角落和/或材料流动通过坯料容器界面上的摩擦力来控制。通过实验和有限元模拟，验证了该方法在阶梯轴类零件的闭式模锻和正/反罐-罐挤压成形中的有效性。结果表明，在连续模锻中，移动挤压筒一个周期或摆动，可显著降低成形压力，并可通过移动挤压筒来控制挤压过程中两个方向的材料流动。
In order to reduce the forming pressure of precision forging to a feasible level, a method employing an axially driven container is proposed. In this method, a movable container, which is axially driven by an actuator while the billet is squeezed by the punch, is employed. The billet material flows easily into the corners of the die cavity and/or the material flow is controlled by the help of the friction over the billet-container interface. The effectiveness of this method for enclosed-die forging of stepped shafts and for forward/backward can-can extrusion are examined by experiments and by FEM simulation. The results show that the forming pressure is reduced significantly in enclosed-die forging when the container is moved in one cycle or oscillation, and the material flow in the two directions of extrusion can be controlled by moving the container.